/*
 * Copyright 2018 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.kie.dmn.core.fluent;

import org.kie.api.command.ExecutableCommand;
import org.kie.api.runtime.Context;
import org.kie.dmn.api.core.DMNContext;
import org.kie.dmn.api.core.DMNRuntime;
import org.kie.dmn.core.api.DMNFactory;
import org.kie.internal.command.RegistryContext;

public class SetDMNInputCommand implements ExecutableCommand<Void> {

    private final String name;
    private final Object value;

    public SetDMNInputCommand(String name, Object value) {
        this.name = name;
        this.value = value;
    }

    @Override
    public Void execute(Context context) {
        RegistryContext registryContext = (RegistryContext) context;
        DMNContext dmnContext = registryContext
                .computeIfAbsent(DMNContext.class,
                                 clazz -> {
                                     DMNRuntime dmnRuntime = registryContext.lookup(DMNRuntime.class);
                                     return dmnRuntime != null ? dmnRuntime.newContext() : DMNFactory.newContext();
                                 });
        dmnContext.set(name, value);
        return null;
    }
}
